.header {
  width: 100%;
  background-color: #fff;
}
.header .content {
  float: left;
  height: 84px!important;
  margin: 0 auto;
  padding-left: 100px;
  width: 100%;
  background: white;
}
.header .content .logo {
  float: left;
  margin-top: 12px;
  width: 226px;
  height: 60px;
}
.header .content .main-nav {
  float: left;
}
.header .content .main-nav:after {
  content: '';
  height: 0;
  visibility: hidden;
  display: block;
  clear: both;
}
.header .content .main-nav a {
  float: left;
}
.header .content .main-nav li {
  height: 84px;
  line-height: 84px;
  font-family: "微软雅黑";
  font-size: 18px;
  color: #222222;
  transition: color 0.3s;
  -webkit-transition: color 0.3s;
  transition: background-color 0.3s;
  -webkit-transition: background-color 0.3s;
  padding: 0 16px;
}
.header .content .main-nav li:hover {
  background-color: #0a8ad5;
  color: #fff;
}
.header .content .main-nav .th-bg {
  background-color: #0a8ad5;
  color: #fff;
}
@media screen and (max-width: 1500px) {
  .header {
    min-width: 1200px;
  }
  .header .content {
    min-width: 1200px;
  }
  .header .content .main-nav li {
    font-size: 18px;
    padding: 0 20px;
  }
}
